Bug 204084

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This is really 3 resource agents and requires multiple dependencies, which we do
not currently have in rgmanager.  Since we are working on the multiple
dependency issue and this is not really a single bug, I'm closing this one for now.

Alexander Krauth has worked on a generic resource agent for SAP server software,
he'll attach the current revision to this BZ. Mind that this still needs
multiple dependencies, as we need to specify that an SAP appserver needs a
running SAP message server and database to be started. In the SAP case, we also
need "weak" dependencies, i.e. the dependencies are only needed for starting, it
handles reconnecting to  the message server or DBMS by itself.

Created attachment 138692 [details]
SAP ocf resource agent for Linux HA solutions

Here is the current SAP resource agent developed in the SAP LinuxLab. It is not
jet completed and not completely tested (but basicaly working). It uses SAP
Kernel 7.00 functionality which is planed to be "backported" to SAP 4.6D in the
near future. It is generic to start,stop and monitor all types of SAP instances
(systems).
Another agent called SAPdatabase will (hopefully) follow soon, which will cover
the SAP specific database features.
It is planed that both agents will also be part of the cluster ha project that
feads the heartbeat.rpm.

Cheers,
Alex

As I suspected, that agent will only require very tiny modifications in order to
work with rgmanager (ex: location of ocf-shellfuncs, for example, differs on
rgmanager vs. heartbeat).

Created attachment 138694 [details]
Check two places for ocf-shellfuncs in SAPInstance

Created attachment 138695 [details]
RHEL4 rgmanager patch to choose primary attr if none is provided

Created attachment 138696 [details]
RHEL5 rgmanager patch to choose primary attr if none is provided

With those patches, rgmanager can use the resource agent.  I haven't fully
tested it, but in cluster.conf, it would look like:

<service name="example">
  <SAPInstance InstanceName="test" DIR_EXECUTABLE="foo" DIR_PROFILE="bar"
START_PROFILE="wachattamanga"/>
  <fs .../>
  <ip .../>
</service>

Note: case sensitive!

Case sensitive is no problem because the 3 latter options are hardly if ever
used (customers use the defaults given by the SAP installer, the options are
just there for the sake of completeness, i.e. if some customer suffers from the
NIH syndrome).

Are there BZ entries that deal with the "multiple dependency" and "one service
follows another" issues?

Another question: to use that resource manager, does the <service> metadata need
to be changed, i.e. does <service> need to know that SAPInstance is a valid child?

Created attachment 142956 [details]
SAP ocf resource agent database for Linux HA solutions

Created attachment 142957 [details]
SAP ocf resource agent for Linux HA solutions

I attached the first full functional version of the SAPInstance and SAPDatabase
resource agents. They are tested and working with the Linux-HA project
(http://www.linux-ha.org/) right now.
Tests with Red Hat Cluster Suite will follow asap.

Are there any further dependencies on rgmanager that have not been resolved?

Adding 'cc ecs-dev-list for tracking

No deps on rgmanager; SAP resource agents are in the RHEL5 branch.  I altered
the scripts themselves to add the primary="x" attribute to the metadata rather
than requiring core rgmanager changes.

All we need to do here is check the ones from the RHEL5 branch in to CVS

Alex, please attach the current versions of the SAP resource agent files to this
bug. Thanks.

Created attachment 157536 [details]
SAP ocf resource agent database for Linux HA solutions

actual version of SAPDatabase OCF agent attached

Created attachment 157537 [details]
SAP ocf resource agent for Linux HA solutions

actual version of SAPInstance OCF agent attached

Somebody who has permission:
Please set that patch named: "Check two places for ocf-shellfuncs in
SAPInstance" to obsolete.

(In reply to comment #29)
> Somebody who has permission:
> Please set that patch named: "Check two places for ocf-shellfuncs in
> SAPInstance" to obsolete.

done.

Patch in CVS

Rather, RA's from RHEL5 branch checked in to RHEL4 branch.

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2007-1000.html